[LUCENE-7823] Have a naive bayes classifier which uses plain BM25 scores instead of plain frequencies

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.0
• Component/s: modules/classification
• Lucene Fields: New
• Assignee: Tommaso Teofili
• Reporter: Tommaso Teofili
• Created: 11/May/17 14:22
• Updated: 28/Aug/22 15:14
• Resolved: 15/May/17 12:16

Description

SimpleNaiveBayesClassifier users term frequencies with add one smoothing to calculate likelihood and just tf for prior. Given Lucene has switched to BM25 it would be better to have a different impl which uses BM25
scoring as a probability measure of both prior and likelihood.